ASTROSAT CZTI

Data Quality Report

Orbit 51896

Creation date: 2025-05-02T23:59:01.395204
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C09_011T05_9000006466_51896cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51896cztM0_level2_quad_clean.evt
Size (bytes)2,274,212,160210,571,200
Size2.1 GB 200.8 MB
Events in quadrant A15,904,9681,537,081
Events in quadrant B19,232,2081,422,500
Events in quadrant C11,918,3111,542,922
Events in quadrant D35,736,634625,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03690
B03700
C03700
D03691

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059696105
B069599136
C04753368
D0118846296

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1807113987.736152%
B18074384721.284718%
C180727584.194334%
D180541131462.667553%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 19442 18096 998 998 5.13% 5.52%
B 19442 18094 2801 2801 14.41% 15.48%
C 19442 18092 485 485 2.49% 2.68%
D 19440 18076 9563 9563 49.19% 52.90%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 3 2644386 5742.65 1863 1817 460.2
A 5 241 1047686 2272.81 1863 1817 460.2
A 15 174 782884 1697.36 1863 1817 460.2
B 4 170 8636839 23703.65 1722 1661 364.3
B 10 254 702249 1923.12 1722 1661 364.3
B 4 171 594419 1627.13 1722 1661 364.3
C 3 233 529939 1047.18 1848 1827 504.3
C 15 230 516033 1019.6 1848 1827 504.3
C 13 3 510357 1008.35 1848 1827 504.3
D 11 129 16065277 43286.64 1192 1145 371.1
D 6 42 8200628 22094.44 1192 1145 371.1
D 12 17 1954236 5262.83 1192 1145 371.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter